src/com/owncloud/android/ui/activity/FileActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2011  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.ui.activity;
  20
  21 import android.accounts.Account;
  22 import android.accounts.AccountManager;
  23 import android.accounts.AccountManagerCallback;
  24 import android.accounts.AccountManagerFuture;
  25 import android.accounts.OperationCanceledException;
  26 import android.content.ActivityNotFoundException;
  27 import android.content.Intent;
  28 import android.net.Uri;
  29 import android.os.Bundle;
  30 import android.webkit.MimeTypeMap;
  31 import android.widget.Toast;
  32
  33 import com.actionbarsherlock.app.SherlockFragmentActivity;
  34 import com.owncloud.android.AccountUtils;
  35 import com.owncloud.android.Log_OC;
  36 import com.owncloud.android.authentication.AccountAuthenticator;
  37 import com.owncloud.android.datamodel.OCFile;
  38 import com.owncloud.android.files.FileHandler;
  39
  40 import eu.alefzero.webdav.WebdavUtils;
  41
  42 /**
  43  * Activity with common behaviour for activities handling {@link OCFile}s in ownCloud {@link Account}s .
  44  *
  45  * @author David A. Velasco
  46  */
  47 public abstract class FileActivity extends SherlockFragmentActivity implements FileHandler {
  48
  49     public static final String EXTRA_FILE = "com.owncloud.android.ui.activity.FILE";
  50     public static final String EXTRA_ACCOUNT = "com.owncloud.android.ui.activity.ACCOUNT";
  51
  52     public static final String TAG = FileActivity.class.getSimpleName();
  53
  54
  55     /** OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located. */
  56     private Account mAccount;
  57
  58     /** Main {@link OCFile} handled by the activity.*/
  59     private OCFile mFile;
  60
  61     /** Flag to signal that the activity will is finishing to enforce the creation of an ownCloud {@link Account} */
  62     private boolean mRedirectingToSetupAccount = false;
  63
  64     private FileHandlerImpl mFileHandler;
  65
  66
  67     @Override
  68     protected void onCreate(Bundle savedInstanceState) {
  69         super.onCreate(savedInstanceState);
  70
  71         /// Load of saved instance state: keep this always before initDataFromCurrentAccount()
  72         if(savedInstanceState != null) {
  73             mFile = savedInstanceState.getParcelable(FileActivity.EXTRA_FILE);
  74             mAccount = savedInstanceState.getParcelable(FileActivity.EXTRA_ACCOUNT);
  75         } else {
  76             mAccount = getIntent().getParcelableExtra(FileActivity.EXTRA_ACCOUNT);
  77             mFile = getIntent().getParcelableExtra(FileActivity.EXTRA_FILE);
  78         }
  79
  80         if (mAccount != null && AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name)) {
  81             onAccountChanged();
  82         }
  83
  84         mFileHandler = new FileHandlerImpl();
  85     }
  86
  87
  88     /**
  89      * Validate the ownCloud {@link Account} associated to the Activity any time it is
  90      * started, and if not valid tries to move to a different Account.
  91      */
  92     @Override
  93     protected void onStart() {
  94         Log_OC.e(TAG, "onStart en FileActivity");
  95         super.onStart();
  96         /// Validate account, and try to fix if wrong
  97         if (mAccount == null || !AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), mAccount.name)) {
  98             if (!AccountUtils.accountsAreSetup(getApplicationContext())) {
  99                 /// no account available: force account creation
 100                 mAccount = null;
 101                 createFirstAccount();
 102                 mRedirectingToSetupAccount = true;
 103
 104             } else {
 105                 /// get 'last current account' as default account
 106                 mAccount = AccountUtils.getCurrentOwnCloudAccount(getApplicationContext());
 107                 onAccountChanged();
 108             }
 109         }
 110     }
 111
 112
 113     /**
 114      * Launches the account creation activity. To use when no ownCloud account is available
 115      */
 116     private void createFirstAccount() {
 117         AccountManager am = AccountManager.get(getApplicationContext());
 118         am.addAccount(AccountAuthenticator.ACCOUNT_TYPE,
 119                         AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD,
 120                         null,
 121                         null,
 122                         this,
 123                         new AccountCreationCallback(),
 124                         null);
 125     }
 126
 127
 128     /**
 129      * {@inheritDoc}
 130      */
 131     @Override
 132     protected void onSaveInstanceState(Bundle outState) {
 133         super.onSaveInstanceState(outState);
 134         outState.putParcelable(FileActivity.EXTRA_FILE, mFile);
 135         outState.putParcelable(FileActivity.EXTRA_ACCOUNT, mAccount);
 136     }
 137
 138
 139     /**
 140      * Getter for the main {@link OCFile} handled by the activity.
 141      *
 142      * @return  Main {@link OCFile} handled by the activity.
 143      */
 144     public OCFile getFile() {
 145         return mFile;
 146     }
 147
 148
 149     /**
 150      * Setter for the main {@link OCFile} handled by the activity.
 151      *
 152      * @param file  Main {@link OCFile} to be handled by the activity.
 153      */
 154     public void setFile(OCFile file) {
 155         mFile = file;
 156     }
 157
 158
 159     /**
 160      * Getter for the ownCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 161      *
 162      * @return  OwnCloud {@link Account} where the main {@link OCFile} handled by the activity is located.
 163      */
 164     public Account getAccount() {
 165         return mAccount;
 166     }
 167
 168
 169     /**
 170      * @return  'True' when the Activity is finishing to enforce the setup of a new account.
 171      */
 172     protected boolean isRedirectingToSetupAccount() {
 173         return mRedirectingToSetupAccount;
 174     }
 175
 176
 177     /**
 178      * Helper class handling a callback from the {@link AccountManager} after the creation of
 179      * a new ownCloud {@link Account} finished, successfully or not.
 180      *
 181      * At this moment, only called after the creation of the first account.
 182      *
 183      * @author David A. Velasco
 184      */
 185     public class AccountCreationCallback implements AccountManagerCallback<Bundle> {
 186
 187         @Override
 188         public void run(AccountManagerFuture<Bundle> future) {
 189             FileActivity.this.mRedirectingToSetupAccount = false;
 190             if (future != null) {
 191                 try {
 192                     Bundle result;
 193                     result = future.getResult();
 194                     String name = result.getString(AccountManager.KEY_ACCOUNT_NAME);
 195                     String type = result.getString(AccountManager.KEY_ACCOUNT_TYPE);
 196                     if (AccountUtils.setCurrentOwnCloudAccount(getApplicationContext(), name)) {
 197                         FileActivity.this.mAccount = new Account(name, type);
 198                         FileActivity.this.onAccountChanged();
 199                     }
 200                 } catch (OperationCanceledException e) {
 201                     Log_OC.e(TAG, "Account creation canceled");
 202
 203                 } catch (Exception e) {
 204                     Log_OC.e(TAG, "Account creation finished in exception: ", e);
 205                 }
 206
 207             } else {
 208                 Log_OC.e(TAG, "Account creation callback with null bundle");
 209             }
 210             if (mAccount == null) {
 211                 finish();
 212             }
 213         }
 214
 215     }
 216
 217
 218     public void openFile(OCFile file) {
 219         mFileHandler.openFile(file);
 220     }
 221
 222
 223     /**
 224      *  Called when the ownCloud {@link Account} associated to the Activity was just updated.
 225      *
 226      *  Child classes must grant that state depending on the {@link Account} is updated.
 227      */
 228     protected abstract void onAccountChanged();
 229
 230
 231     public class FileHandlerImpl implements FileHandler {
 232
 233         public void openFile(OCFile file) {
 234             if (file != null) {
 235                 String storagePath = file.getStoragePath();
 236                 String encodedStoragePath = WebdavUtils.encodePath(storagePath);
 237                 try {
 238                     Intent i = new Intent(Intent.ACTION_VIEW);
 239                     i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), file.getMimetype());
 240                     i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 241                     startActivity(i);
 242
 243                 } catch (Throwable t) {
 244                     Log_OC.e(TAG, "Fail when trying to open with the mimeType provided from the ownCloud server: " + file.getMimetype());
 245                     boolean toastIt = true;
 246                     String mimeType = "";
 247                     try {
 248                         Intent i = new Intent(Intent.ACTION_VIEW);
 249                         mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(storagePath.substring(storagePath.lastIndexOf('.') + 1));
 250                         if (mimeType == null || !mimeType.equals(file.getMimetype())) {
 251                             if (mimeType != null) {
 252                                 i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), mimeType);
 253                             } else {
 254                                 // desperate try
 255                                 i.setDataAndType(Uri.parse("file://"+ encodedStoragePath), "*/*");
 256                             }
 257                             i.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
 258                             startActivity(i);
 259                             toastIt = false;
 260                         }
 261
 262                     } catch (IndexOutOfBoundsException e) {
 263                         Log_OC.e(TAG, "Trying to find out MIME type of a file without extension: " + storagePath);
 264
 265                     } catch (ActivityNotFoundException e) {
 266                         Log_OC.e(TAG, "No activity found to handle: " + storagePath + " with MIME type " + mimeType + " obtained from extension");
 267
 268                     } catch (Throwable th) {
 269                         Log_OC.e(TAG, "Unexpected problem when opening: " + storagePath, th);
 270
 271                     } finally {
 272                         if (toastIt) {
 273                             Toast.makeText(FileActivity.this, "There is no application to handle file " + file.getFileName(), Toast.LENGTH_SHORT).show();
 274                         }
 275                     }
 276                 }
 277             } else {
 278                 Log_OC.wtf(TAG, "Trying to open a NULL OCFile");
 279             }
 280         }
 281     }
 282 }